2. In the first place, then, I wish by this preamble to put a stop to the expectations of readers who may think that I am about to lay down rules of rhetoric such as I have learnt, and taught too, in the secular schools, and to warn them that they need not look for any such from me. Not that I think such rules of no use, but that whatever use they have is to be learnt elsewhere; and if any good man should happen to have leisure for learning them, he is not to ask me to teach them either in this work or any other.